Remove unused qd_lock.
diff --git a/cgminer.c b/cgminer.c
index cad7719..6e7cb95 100644
--- a/cgminer.c
+++ b/cgminer.c
@@ -174,7 +174,6 @@ pthread_mutex_t cgusb_lock;
#endif
pthread_mutex_t hash_lock;
-static pthread_mutex_t qd_lock;
static pthread_mutex_t *stgd_lock;
pthread_mutex_t console_lock;
pthread_mutex_t ch_lock;
@@ -7035,7 +7034,6 @@ int main(int argc, char *argv[])
#endif
mutex_init(&hash_lock);
- mutex_init(&qd_lock);
mutex_init(&console_lock);
mutex_init(&control_lock);
mutex_init(&stats_lock);